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The molar conductivity at infinite dilut...

The molar conductivity at infinite dilution of `Al_2(SO_4)_3` is `858S cm^2 mol^-1`. Caclulate the molar ionic conductivity of `Al^(3+)` ion given that `lambda^@(SO_4^(2-))=160 S cm^2 mol^-1`.

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MODERN PUBLICATION-ELECTROCHEMISTRY-EXERCISE
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  2. The function of a salt bridge is to :

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